Means for effecting intermittent treatment of running yarns and the like



March 28", 193-9.. TAYLOR; ET AL 2,152,222 MEANS FOR! EFFECT-Tm;- rN-TER'MTTT-Em TREATMENT OF RUNNING YARNS AND THE. LIKE. Filled Sept. 18,. 1937 2 Sheets-Sheet. 1

F/GZ/ 6 WILLlAM ITAYLOR ALFRED H-WOODRUFF March 23, 1939;; w: 1. TAYLOR E11 m 2,152,222: MEANS FOR EFFECTING= INTERMI-TIEENT TREATMENT. Q'E" RUNNING YARNS AND; THE LIKE;

Ei led Sept; 18;. 1 91527 2 Sheets-Sheet WiLLlAM I- TAYLOR ALF-RED H WOODRU FF Patented Mar. 28, 1939 UNITED STATES MEANS FOR EFFECTING INT'ERMITTENT TREATlWEN'I OF RUNNING YARNS AND William Ivan Taylor and. Alfred Herbert Woodrufi, Spondon, near Derby, England, assignor to Celanese Corporation of America, a corporation of Delaware Application September 18, 1937, Serial No. 164,444 In Great Britain September 26, 1936 11 Claims This invention relates to the intermittent treatment of running yarns, filaments and the like, the object of the invention being to effect intermittent treatments of such materials which,if

they recur at all, do so only after relatively long lengths of the materialshave been treated.

According to the invention means for intermittently treating a running yarn or the like, hereafter referred to as yarn, comprises a yarnengaging member movable in a direction transverse to the path of the yarn, an epicyclic gear adapted to move said member at intervals, and a speed-controlling member in association with said epicyclic gear and adapted to vary the rate of operation of the gear so as to vary the frequency of movement of the yarn-engaging member. Thus, one moving part of the epicyclic gear may be given a rocking motion with respect to another. A member driven by the epicyclic gear is thus given an irregular motion and thus is enabled to treat'the yarn in such a manner that the intermittently treated portions do not recur in such a way as to form undesired patterns when the yarn is made into fabric. For example, the invention. may be used in conjunction with the production of variable denier yarn as described in U. S. Patent No. 1,898,085, according to which artificial filaments are subjected to a variable drawing action during their production so that thin and thick places are formed in alternation in the yarn.

This variable drawing action may be efiected by means of a bar reoiprocated so as to divert the path of the filaments in a spinning machine and cause a consequent increase and. decrease to greater or lesser degrees in the length of the path followed by the filaments issuing from the jet. The bar is conveniently operated from a crank 40 which, according to the present invention, is driven from a planetary gear, the gear in turn being driven at any desired speed and conveniently from the driving means to the feed roller of the spinning machine. Also driven by or in conjunction with a planetary gear is a gear train terminating in a crank connected to part of the planetary gear, for example either the housing of the gear or the wheels'meshing with the internal gear inside the housing. The oscillatory motion imparted by the crank may be relatively slow as compared with the rate of rotation of the crank driving the yarn diverting bar. Because of the oscillatory motion applied to part of the planetary gear, the driving of the crank is not steady but varies in an irregular way over a cycle of considerable length. The frequency with which the yarn is diverted is therefore uneven so that the portions of the yarn receiving the irregular drawing action are not regular in occurrence.

A form ofapparatus tionwill now be. describediin greater detail with reference to the accompanying diagrammatic drawings of which:

Fig. 1 is a front elevation of the apparatus shown applied to a portion ofa dry spinning machine;

V Fig. 2 is a part crosswsectional end elevation of the apparatus shown in Fig. 1; and Figs. 3 and 4 are part cross-sectional front and end elevations, respectively, of a detail of Figs. 1 and 2. r

Referring to Figs. 1 and 2, filamentary bundles or yarns .5 extruded from jets (not shown) disposed in cells 6 of a dry spinning machine pass over a guide I and through a letter-box opening 8 formed in each cell. From the openings 8 the yarns proceed to a common godet roller 9 mounted on a driving shaft, Hi, each yarn being guided around the roller by a back guide II prior to passing to a cap twisting device I2 by way of a balloon guide l3. The yarns are thus drawn from the spinning cells 6 by the godet roller 9 which forwards the yarns to the cap twisting device I2, each yarn being twisted by a corresponding device 12 and wound by the device on a bobbin'l l. In proceeding from the opening 8 to the godet roller 9 each yarn passes under a guide rod l5 and in contact with a wick lubricating device I6 arranged near to the guide rod. Disposed transversely with respect to the path of the yarns between the openings 8 and the guide rod I5 is a deflecting bar ll which is raised and lowered at intervals (in a manner to be described later) bya connectingrod l8 operated by a crank l9 secured to a shaft 20. On beingraised, the defiecting'bar l'l enga'ges theyarns and causes them to follow a longer path between the openings '8 and the guide rod', l5 (see Fig. 2) the sudden lengthening of the path subjecting the yarns to added tension which results in the forming in each yarn, of a length of reduced denier. On lowering of the bar the'yarns are permitted to follow a straight path (indicated by a dotted' line in Fig. 2)' between the openings 8 and the .guide rod l5, the consequent'reduction in the tenaccordingto the inven- L In the manner described above the yarns are formed with portions of greater denier alternating with portions of reduced denier along their length, the portions of greater denier imparting a slub effect to the 'ya'rns. The incidence of the reduced portions depends on the frequency with which the deflecting bar I! is raised and lowered, regular raising and lowering of the deflecting bar ll producing correspondingly regular portions of reduced denier in the yarns. regularity, however, may result in the formation of undesirable patterns in fabric containing the yarn, and in order to destroy the regularity, ar-id thus enable pattern-free fabrics e produced, the rate of movement of the defl ct'ing bar I! is con"- stantly varied throughout the yarn-forming operation in such a manner that if '-'a repeat does occur in the incidence of the portions "of greater and less denier along the yarns such repeat appears only after relatively long lengths of the yarns havebee'n treated.

The deflectin'gbar I1 is'therefore drive'n in the following'in'annerz t A chain "sprocket 22 mounted "on the godet roller shaft I drives through chain and sprocket gearing-- 23 the driving sprocket 24 0f anepicyclic "gear "box, generally 'ihdicated by the reference 'nume'r'al'25 (seeinparticular Figs. 3-'and4). The

sprocket 24 is mounted on a shaft =26'supported 'in ballb'earifigs '21 'liliils'ei'l Within the casing 28 6f the "gear box, the shaft T-dri'virig arot'atable member 29 which is secured to the shaft.

Iheniember2'9 'is 'jdin'edby arms w th afiirther rotatable iiieinber 3 I which 'rides in a ballbearing az mo'untede the drivemshaft 3r ofthe gear box, the driven *s'liaft Tbing supported in the bearing 32 andin a further bearing 34 noe -es in the "c'asiiig18. rne two rotatable members,

'Thefplanetary 'gears 35 engage both thet'eth tr'an inverted; annula rack "38 secerea in the casing "28 and "a "cential sun 'wheel be wr i ch is secured to the dr'iven"shaft =33, *the planetary gears thus "transmitting 'drive from the driving "shaft 26' to the "driven shaftf3 3' ata rate "which "Ganbe 'varie dby movement-ochre annular rack ans @Fa; chain raised and lowered diir'iiig "the passage of the In order" to vary the rate orintvemem of 1 the deflecting bar l'l'fa pinion Hsecuredto-the ehd "or the driving shaft' 2'6fof thefiear'box 'fifdrives "a "gear wheel 4 thefgeariwheel fi d'rivji'ng' in; turn 'th'roughan intermediate-"pinion 46 a further'gear wheel 41 'towhich 'i attahed a cran 8. The

ibralgetf 53, isfcaused to rock iri" itsbearings" while dr ing he d flect n /bar l *R ;in b i't gear box (ai 'id" cQnseQucntly thei rack 38) in the direotion of rotation of the shaft is positively i ta es 'l' ei eis bi i iai n :Q 'f he d t' '"shaftf33 and "hence the rate of mov merit "of the dflectingbar' l 1;whi1eroking'of-the box'fthe direction opposite to that of the rotationbf the shaft 26 negatively accelerates the rate ofrotation of the shaft 26 and thus retards the rate of movement of the deflecting bar H.

The rate of movement of the bar is thus alterh'ately increased above and decreased below a mean value which obta'inson-ly when the gearcasing 21 is momentarily stationary at the end "of each rocking movement, the continued variation being sufficient to prevent regularity in the incidence of the portionsof reduced and increased denier in the yarns. In other words, the apparatus functions in a manner such that exactly similar teh'sioning cycles, if occurring at all, occur "only afterrelatively long lengths of the ysms ave b'een treated, and are insufficient to create'p'attfneffects in fabrics formed from the yarns.

The deflecting bar I! is guided in a vertical path by guide bars or spindles 55 mounted on brackets '56 and sliding within elongated sleeves -51 *fo'rmed'in the bar. The height of the deflectin'g bar relatively tothe connecting rod .18 may be-adjust'ed by a screw device58 'in order'to regulate tlie'de'gree of tension'to which the yarns 5 are subjected.

While the deflecting bar H is shown applied -to 'a part *onlyof a spinning machineand to be drivnb'y a's'ingle'crank f 9, it willbe understood thattthe bar could be extendedalong the whole length ofthe machine so'as toop'erate on all the 'yarns'produced in the machine, the shaft 20 being lengthened accordingly'and equipped with an appropriatenumber of'cr'anks l9.

V Inorder to neutralize the'unbalancing effect on the shaft'20of the movementiof :the bar I! the shaft is;provided with an eccentrically mounted balanceboss 59, and'a heavyboss Gllwhich has the elfect of a'fly-wheelonthe shaft. -'I he varying of the rate of-movement of the deflecting bar ll may be increased orreduced by yaryingtheposition of the-pivot of the connect- -ing rod 49 in the-bifurcatedjarm-ifl attached to the casing of thelgearbox 25. Thus by setting thepivot near the outer end of the arm the gear bqx-25 ;will be caused-t0 rock'througha greater angle, and by setti g the-pivot nearer to the gear box (i. e towards the;leftin Fig; 4) the gear box fwill becaused to rockthrough; a less angle. Further variation may beobtained by slightly varying the; rate of rotation of the v'godet roller shaft ID. A small variation in'the rate of rotation of the shaft [0, while being-insufficient to bring about any substantial change in the denier of the yamsspun, may,nevertheless, produce an apjpieciablejvariation inthe rate'o f movement of "th gfdeflect'ingbar ll.

"While the above description has been' directed more particularly to the intermittent stretching 'of'yarrisln the'bou'rse'oftheir production, it will be hnder'stood that similar apparatus could be emp'myed in the s'tretching' of yarns in a bobbinto bobbin or like operation. Again, the invention may beapplied' a similar manner to other operations'for the' intermittent treatment of yarns, as, for example,- intermittent dyeing, intermittnt'applicatidn' 'of sizes or other resists, and the intermittent saponiflcation of cellulose acetateor other cellulose ester yarns.

'Hsvmg'descnbd our invention, what we desire to'secure by Letters Patent is:

\ 1. "Apparatus for intermittently treating a runn'ingyarn, comprising a yarn enga'ging member, an epicyclic geafadapted' to move said member "inatii'rectiori trans erseftd the" pathof the yarn s0""as to displace -isaiidkiath at intervals, and

a speed-controlling member in association with said epicyclic gear and adapted to vary the rate of operation of the gear so as to vary the frequency of movement of the yarn-engaging memher.

2. Apparatus for intermittently treating a running yarn, comprising a movable yarn-engaging member in a direction transverse to the path of the yarn so as to displace said path, a crank for operating said member, an epicyclic gear adapted to rotate the crank so as to move the yarn-engaging member at intervals, and a speedcontrolling member in association with said epicyclic gear and adapted to vary the rate of operation of the gear so as to vary the frequency of movement of the yarn-engaging member.

3. Apparatus for intermittently treating a running yarn, comprising a movable yarn-engaging member, an epicyclic gear adapted to move said member in a direction transverse to the path of the yarn so as to displace said path at intervals, said gear comprising a portion capable of rocking relatively to the rest of the gear so as to impart positive and negative acceleration in turn to the gear, and means for rocking said portion of the gear so as to vary the frequency of movement of the yarn-engaging member.

4. Apparatus for intermittently treating a running yarn, comprising an epicyclic gear adapted to move said member in a direction transverse to the path of the yarn so as to displace said path at intervals, said gear comprising a portion capable of rocking relatively to the rest of the gear so as to impart positive and negative acceleration in turn to the gear, means for rocking said portion of the gear so as to vary the frequency of movement of the yarn-engaging member, and means for regulating the angle through which said portion is rocked.

5. Apparatus for intermittently treating a running yarn, comprising a movable yarn-engaging member, an epicyclic gear adapted to move said member in a direction transverse to the path of the yarn so as to displace said path at intervals, said gear comprising an annular gear in engagement with the planetary wheels of the epicyclic gear, said annular gear being capable of rocking relatively to the planetary wheels so as to impart positive and negative acceleration in turn to such wheels, and means for rocking the annular gear so as to vary the frequency of movement of the yarn-engaging member.

6. The combination with a spinning machine of a movable bar disposed near the yarn outlet of the machine, an epicyclic gear adapted to move the bar in a direction transverse to the path of the yarn so as to displace said path at intervals so as to draw the yarn from the machine at varying linear speeds, and a speed-controlling member in association with said epicyclic gear and adapted to vary the rate of operation of the gear so as to vary the frequency of movement of the yarn-engaging bar.

7. The combination with a spinning machine of a movable bar disposed near the yarn outlet of the machine, an epicyclic gear adapted to move the bar in a direction transverse to the path of the yarn so as to displace said path at intervals so as to draw the yarn from the machine at varying linear speeds, means for transmitting drive from the feed. rollerof the spinning machine to the gear and a speed controlling member in association with said epicyclic gear and adapted to vary the rate of operation of the gear so as to vary the frequency of movement of the yarn-engaging bar.

8. The combination with a spinning machine of a movable bar disposed near the yarn outlet of the machine, an epicyclic gear adapted to move the bar in a direction transverse to the path of the yarn so as to displace said path at intervals so as to draw the yarn from the machine at varying linear speeds, means for transmitting drive from the feed roller of the spinning machine to the gear and a speed-controlling member in association with the gear and adapted to vary the rate of operation of the gear so as to vary the frequency of movement of the yarn-engaging bar, and means for transmitting drive from the feed roller of the spinning machine to the speed-controlling member.

9. The combination with a spinning machine of a movable bar disposed near the yarn outlet of the machine, an epicyclic gear adapted to move the bar in a direction transverse to the path of the yarn so as to displace said path at intervals so as to draw the yarn from the machine at varying linear speeds, said gear comprising an annular gear in engagement with the planetary wheels of the epicyclic gear, said annular gear being capable of rocking relatively to the planetary wheels so as to impart positive and negative acceleration in turn to such wheels, and means for rocking the annular gear so as to vary the frequency of movement of the yarn-engaging bar,

10. The combination with a spinning machine of a movable bar disposed near the yarn outlet of the machine, an epicyclic gear adapted to move the bar in a direction transverse to the path of the yarn so as to displace said path at intervals so as to draw the yarn from the machine at varying linear speeds, said gear comprising an internal annular gear in engagement with the planetary wheels of the epicyclic gear, said annular gear being capable of rocking relatively to the planetary wheels so as to impart positive and negative acceleration in turn to such wheels, means for transmitting drive from the feed roller of the spinning machine to the gear, a crank for rocking the annular gear so as to vary the frequency of movement of the yarn-engaging bar, and means for transmitting drive from the feed roller of the spinning machine to the crank.

11. Apparatus for intermittently treating a running yarn, comprising a yarn-engaging member, an epicyclic gear adapted to move said member in a direction transverse to the path of the yarn so as to displace said path at intervals, said epicyclic gear comprising an annular gear secured within a casing, the casing being supported in; bearings so as to be free to rock and thus rock the annular gear relatively to the rest of the gear so as to impart positive and negative acceleration in turn to the gear and means for rocking said annular gear so as to vary the frequency of movement of the yarn-engaging member.

WILLIAM IVAN TAYLOR. ALFRED HERBERT WOODRRUFF.

CERTIFICATE OF CORRECTION; Patent-No..2,l52,222- March 28,. 19 9.

I WILLIAM IVAN TAYLOI K, ET AL.

It is hereby certified that error. appears in the printed specification of the above numbered patent requiring correction as follows: Page 5, first column, 1ines8 and 9, claim 2, strike out the words "in a direction transverse to the path of the,yarn so as to displace said path" and insert the same after "member", line 12, same claim; line 29, claim h, after 'compris ing" insert the words and comma ahovableyarn-engaging member,;- and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office Signed and sealed this 9th day of May, A. D. 1959.

Henry Van Arsda (Seal) Acting Commissioner of Patents. 

